The Reserch On Optimal Operation Methods Of Heating Pipe Network

Because of the rapid development the heating area of central heating system is gradually increasing. The investment of heating pipeline network is accordingly more and more. Heating pipeline network also increasingly reveal its importance. Since heating pipeline network is a complicated distribution network, research on optimization of heating pipeline network is essential to reducing energy consumption and operating cost, as well as ensuring system safety and economic operation .The optimization mainly includes layout optimization, design optimization and operation optimization.Optimization of heating pipeline operation could be achieved by modifying the pipe network through diversified ways such as adjusting methods, multi-source heating network and heating parameters , etc. Technically, these processes could be implemented separately.This paper emphasizes on the choice of economic heating regulation method to obtain the best adjusting method. On the basis of hydraulic calculation and heating adjust formula, mathematic models of quality regulation, quality-traffic regulation and grading variable flow quality regulation are listed. Using Delphi combined with SQL Server database compiled the heating network operation adjustment optimization software and make a brief introduction. Software considers the heating pipeline network conditions such as the pipe type, the heat numbers and different connections, by inputting network parameters, the calculation of hydraulic power, flow, pressure loss and head of each section, as well as the selection of appropriate circulating pumps for different adjusting methods, are implemented. Through calculation of the model by using 3 heating adjusting methods, supply and return water temperature and temperature adjustment curve are concluded. Finally, through economic analysis, the most appropriate optimization method is determined, and check back of the hydraulic condition of the optimized system is implemented. Finally, select a specific heating network mode. Compare the two results of computer calculation and hand computation to verify the software's accuracy. The results show that using the software hydraulic calculation errors are within permitted. The software requirements calculation and analysis process is more intuitive, greatly accelerate the calculation speed.